High temperature o rings, rubber seals for canisters, plumbing o ring kit, small rubber gasket. Red food grade silicone O Rings better sealing than rubber o rings has environmental protection. Our O-rings feature a smooth surface, ensuring excellent sealing performance and mechanical durability and also the high-quality materials guarantee stability and an extended lifespan. 225 pieces (5x20PCS - 6*1.9mm, 7*1.9mm, 8*1.9mm, 9*1.9mm, 10*1.9mm; 5x15 PCS - 12*1.9mm, 14*1.9mm, 16*1.9mm, 18*1.9mm, 20*1.9mm; 5x10 PCS - 15*2.4mm, 16*2.4mm, 17*2.4mm, 18*2.4mm, 20*2.4mm)Food grade silicone O-ring available in various standard sizes for different applications. The special tool bag is provided for easy storage and transport of the entire tool set. Widely soft material silicone o ring kit application: pneumatics sealing, ressure,hydraulic o ring kit, reaction valve o'ring, mechanical gas compressor, heat exchanger, sealer kits, filter, plumbing.